Results 21 to 30 of about 4,585 (121)

Confirming the impact origin of the São Miguel do Tapuio structure, northeastern Brazil

Meteoritics &Planetary Science, EarlyView.
Abstract The São Miguel do Tapuio structure (SMT) is a remarkable, nearcircular feature of about 21 km diameter, centered at 5°37.6′ S, 41°23.3′ W in Piauí state, northeastern Brazil. The structure is located within the sedimentary strata of the Paleozoic–Mesozoic Parnaíba Basin and predominantly comprises sandstones of the Devonian Pimenteiras and ...
Alvaro Penteado Crósta, Neivaldo Araújo de Castro, Marcos Alberto Rodrigues Vasconcelos, Airton Natanael Coelho Dias, Ludovic Ferrière, Wolf Uwe Reimold, Ana Maria Góes, Jackson Alves Martins, Liliana Sayuri Osako, Raimundo Mariano Gomes Castelo Branco   +9 more
wiley   +1 more source

Centro Nacional de Investigaciones Científicas

Revista CENIC Ciencias Químicas, 2006
La huella dactilar mediante Cromatografía Gaseosa Capilar de Alta Resolución fue obtenida para 18 muestras de crudos de petróleo cubano de dos yacimientos: 9 de Pina y 9 de Puerto Escondido. El análisis fue realizado usando columna capilar DB-1 (J&W), de
Gloria Llabre Raurell, Isis Prado González, Olga Pascual Fernández, Albertina Gutiérrez Rodríguez, Valia Barreras, José Orlando López Quintero   +5 more
doaj  

Metodología para la priorización de tecnologías emergentes de recobro mejorado químico

Revista Fuentes El Reventón Energético, 2018
Debido al incremento en el consumo de combustibles y los retos que representa la reposición de reservas, la implementación de procesos de recobro mejorado juega un papel fundamental en el balance energético mundial, ya sea mediante el incremento del ...
Claudia Lorena Delgadillo Aya, Venus Minerva Díaz Guardia, Gustavo Adolfo Maya Toro, Rubén Hernán Castro García, Henderson Ivan Quintero Pérez   +4 more
doaj   +1 more source

Arbuscular mycorrhizal fungal (AMF) communities in sand bars associated with Ipomoea pes‐caprae: a promising strategy for petroleum spill bioremediation in coastal dunes

Restoration Ecology, EarlyView.
Abstract Introduction Polycyclic aromatic hydrocarbons (PAHs), a class of petroleum‐derived compounds known for causing cellular damage and for their recalcitrant behavior, severely limit effective biodegradation. Arbuscular mycorrhizal fungi (AMF) from oil‐contaminated environments can mitigate PAH‐related stress on host plants, highlighting the ...
Ocimar F. de Andrade, Eliane S. de Souza, Camila P. Nobre, Fernanda de Avila Abreu, Manildo M. de Oliveira, Daniel B. Zandonadi, Victor B. Saraiva, Rodrigo L. Martins   +7 more
wiley   +1 more source

Inter-well tracer tests in oil reservoirs using different optimization methods: A field case

Geofísica Internacional, 2005
En la interpretación de pruebas de trazadores entre pozos en yacimientos petroleros, geotérmicos y en acuíferos se emplean diversos métodos de regresión no lineal para determinar algunas de las propiedades físicas promedio del sistema roca fluido.
J. Ramírez-Sabag, O. Valdiviezo-Mijangos, M. Coronado   +2 more
doaj   +1 more source

Governance Structures, Political Change and Executive Turnover in State‐Owned Enterprises: Evidence From Chile

Regulation &Governance, EarlyView.
ABSTRACT To address the shortcomings associated with state ownership, countries have implemented various legal strategies to curb political influence in state‐owned enterprises. This research studies whether these strategies constrain the government's ability to use their appointment powers for political considerations.
Pablo Torres
wiley   +1 more source

METODOLOGÍA PARA LA OPTIMIZACIÓN DE PARÁMETROS DE PERFORACIÓN A PARTIR DE PROPIEDADES GEOMECÁNICAS

Revista Fuentes El Reventón Energético, 2012
Drilling optimization is focused on time operational cost reduction. This can be accomplished from the evaluation of drilling parameters used during offset wells drilling and the development of continuous improvement programs and performance efficient ...
Diego Fernando Suárez, Helmut Esteban Portilla, Reinel Corzo Rueda   +2 more
doaj  

The Goldilocks Effect: How the “Just Right” Writing Styles of Global Corporate Responsibility Frameworks Shapes Their Use by Businesses

Regulation &Governance, EarlyView.
ABSTRACT The 21st century has witnessed a surge in the number of global corporate responsibility (GCR) frameworks issued by international organizations (IOs). Our study investigates whether and to what extent these frameworks shape businesses' Corporate Social Responsibility (CSR) communications.
Adam William Chalmers, Robyn Klingler‐Vidra   +1 more
wiley   +1 more source

Aplicación de la espectroscopia infrarroja y técnicas de reconocimiento de patrones en la caracterización de aditivos de la industria del petróleo

Revista CENIC Ciencias Químicas, 2018
Los aditivos químicos son ampliamente utilizados en la industria del petróleo; éstos varían de acuerdo al proceso tecnológico en los que están involucrados según su funcionalidad.
Karelia Aldana-Jiménez, Yumirka Comesaña-García, Frank Alexis Ochoa-Valladares, Roberto Oropesa-Rodríguez, Ángel Dago-Moralesa Dago-Moralesa   +4 more
doaj  

Systematic Approach for Carbonate and Volcanic Facies Classification Based on Textural and Structural Variations Observed in Brazilian Pre‐Salt Acoustic Image Logs

Journal of Petroleum Geology, Volume 49, Issue 3, Page 869-906, July 2026.
ABSTRACT Facies characterization in carbonate reservoirs remains challenging due to their pronounced textural and structural heterogeneity. Variations in grain packing, cementation, and diagenetic overprints produce contrasting acoustic responses in borehole image logs, often limiting the reproducibility of facies interpretation.
Lenita de Souza Fioriti, Rodrigo César Teixeira de Gouvêa, Cleyton de Carvalho Carneiro   +2 more
wiley   +1 more source